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Method for forming alloy layer upon aluminum alloy substrate by irradiating with a CO.sub.2 laser, on substrate surface, alloy powder containing substance for alloying and silicon or bismuth

US 4,746,540 A · Assignee: Toyota Jidosha Kabushiki Kaisha · Inventors: Kawasaki; Minoru et al.

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed August 8, 1986 and granted May 24, 1988. A patent filed before June 8, 1995 lasts 17 years from grant or 20 from filing, whichever is longer, so its term ended August 8, 2006.
  • Any extension is capped at five years, so it can't still be in force.
  • We haven't checked its US family, and a later related patent could still be in force. We check US rights only.
FiledAugust 8, 1986
GrantedMay 24, 1988
Term endedAugust 8, 2006
Application number06/894941
Classification (CPC)B23K35/286
Length34 pages

Timeline

Timeline From USPTO dates

1987198919911993199519971999200120032005Application filedAug 8, 1986Patent grantedMay 24, 1988Term endedAug 8, 2006

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Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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